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Finding the Fourth Proportional to 5,008.50, 6,912.05 and 2,800.50

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Solution

The fourth proportional to 5,008.50, 6,912.05 and 2,800.50 is: 3,864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.50 : 6,912.05 = 2,800.50 : x
  2. Step 2: Convert to fraction form
    5,008.50/6,912.05 = 2,800.50/x
  3. Step 3: Cross multiply
    5,008.50x = 6,912.05 × 2,800.50
  4. Step 4: Simplify right side
    5,008.50x = 19,357,196.03
  5. Step 5: Solve for x
    x = 19,357,196.03/5,008.50
  6. Step 6: Final answer
    x = 3,864.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.